Home / 272,727.11-408,639.59-139,424.00

Finding the Fourth Proportional to 272,727.11, 408,639.59 and 139,424.00

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Solution

The fourth proportional to 272,727.11, 408,639.59 and 139,424.00 is: 208,905.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,727.11 : 408,639.59 = 139,424.00 : x
  2. Step 2: Convert to fraction form
    272,727.11/408,639.59 = 139,424.00/x
  3. Step 3: Cross multiply
    272,727.11x = 408,639.59 × 139,424.00
  4. Step 4: Simplify right side
    272,727.11x = 56,974,164,501.52
  5. Step 5: Solve for x
    x = 56,974,164,501.52/272,727.11
  6. Step 6: Final answer
    x = 208,905.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.